<template>
  <div class="todo-footer">
    <label>
      <input type="checkbox" v-model="checkAll"/>
    </label>
    <span>
          <span>已完成{{ completeSize }}</span> / 全部{{ todos.length }}
    </span>
    <button class="btn btn-danger" @click="deleteAllcomplete" v-show="completeSize">清除已完成任务</button>
  </div>
</template>

<script>
import { mapActions, mapGetters} from 'vuex'

export default {
  name: "TodoFooter",
  // ...mapState(['todos']),
  computed: {
    ...mapGetters(['completeSize', 'isCheckAll','todos']),
    checkAll: {
      get() {
        return this.isCheckAll
      },
      set(value) {
        this.selectAll(value)
      }

    }
  },
  methods: {
    ...mapActions(['selectAll','delAllTodo']),
    deleteAllcomplete() {
      if (confirm(`你确定要删除全部吗`)) {
        this.delAllTodo()
      }
    }
  }
}
</script>

<style scoped>

/*footer*/
.todo-footer {
  height: 40px;
  line-height: 40px;
  padding-left: 6px;
  margin-top: 5px;
}

.todo-footer label {
  display: inline-block;
  margin-right: 20px;
  cursor: pointer;
}

.todo-footer label input {
  position: relative;
  top: -1px;
  vertical-align: middle;
  margin-right: 5px;
}

.todo-footer button {
  float: right;
  margin-top: 5px;
}

</style>
